Real cases that defined the new circular accountability era in fashion
Regulators across the UK, the EU and the US are demanding that any environmental claim a brand makes can be linked to verifiable, traceable and measurable data.
Sustainability used to be something a brand could express through messaging, but today it requires proof. The gap between what brands say and what they can demonstrate is becoming visible.
For the industry, this signals a deeper shift. Sustainability is evolving from a marketing narrative into an operational reality: claims require systems, promises require traceability. responsibility requires evidence.
Sustainability is becoming evidence based
Regulators now require that claims are backed by information that can be checked and audited. This includes:
- Clear material composition and sourcing
- Product durability and lifecycle data
- Repairability or refurbishing options
- Actual proof of circularity, not theoretical intent
- Transparent information about end of life pathways
If this information does not exist, the claim becomes unreliable.
Real world examples: what happens when proof is missing
The pressure is not hypothetical. Major brands have already faced consequences when sustainability claims lacked verification.
Nike: a sustainability ad banned for insufficient substantiation
On 3 December 2025, the UK Advertising Standards Authority ruled that a Nike ad describing tennis polo shirts as made from “sustainable materials” was misleading, because Nike had not shown the shirts had no adverse environmental impact across their whole life cycle. The issue was not intent, but the absence of evidence that met regulatory standards.
H&M: incorrect impact scores and misleading product labelling
In June 2022, the Norwegian Consumer Authority warned H&M that using Higg Index scores in consumer marketing would easily be misleading, and in September 2022 the Netherlands ACM secured commitments from H&M over vague claims such as “Conscious”. Some products presented as having reduced impact showed higher footprints when reviewed.
ASOS, Boohoo and Asda: use of sustainability language without criteria
In July 2022, the UK CMA opened a formal investigation into these retailers for using terms such as “eco”, “responsible” and “sustainable” without providing clear criteria or accessible evidence. Collections were labelled as greener without defined standards. In March 2024 all three gave the CMA formal undertakings to change how they make green claims.
Decathlon and H&M: commitments over unsubstantiated environmental claims
In September 2022, the Netherlands ACM secured commitments from both companies over sustainability claims it found unclear and insufficiently substantiated, and they donated €400,000 (Decathlon) and €500,000 (H&M) to sustainable causes in place of sanctions. Regulators concluded that the wording overstated environmental performance.
Why every fashion brand needs to prepare now
This is not only about avoiding penalties, it is about operating responsibly in a market that now expects proof.
- Traceability becomes essential: Brands must know what materials they use and where products go after the first sale.
- Circularity must be measurable: Claims about garment longevity require data on grading, cleaning, refurbishment and resale.
- Sustainability becomes operational, not only communicative: Messaging must be anchored in systems that generate verifiable impact data.
- Trust is won through transparency: Investors and customers treat documented evidence as part of brand value.
If a regulator asked you tomorrow to prove every sustainability claim you make, could you?
If the answer is not yet, we can help you get ready.
( About the author )
Joanna Lambert
CEO & Co-Founder, Opera Garment Solutions
Joanna Lambert is CEO and co-founder of Opera Garment Solutions, which recovers returned, damaged and unsold clothing for fashion brands across the EU and the UK from hubs in the United Kingdom, the Netherlands and Spain. She writes on the EU destruction ban and on what returned stock is worth when it goes back to sale.